RNGdle EP and Rarity: Rolls vs Individual Badges

Two different questions

The original About page defines number rarity as a roll’s total EP rank among possible rolls. It defines badge rarity by the chance that a particular badge appears. Keep the labels separate when reading a result.

Overall roll label	Position described by the original site
Trash	Bottom 1%
Common	Bottom 50%
Uncommon	Top 50–25%
Rare	Top 25–10%
Epic	Top 10–5%
Anomaly	Top 5–1%
Mythic	Top 1%

The original wording for Trash and Common overlaps at the bottom. It does not publish every boundary convention on this page. We preserve the published labels instead of inventing a precise classification algorithm.

Individual badge label	Occurrence probability on the original About page
Common	More than 10% of rolls
Uncommon	1–10%
Rare	0.1–1%
Epic	0.01–0.1%
Anomaly	0.001–0.01%
Mythic	Less than 0.001%

A concrete example

The original Quarter-Century badge page describes a number ending in 25, gives the badge a Rare label and lists 10,000 EP and 1.00% probability. That is a badge fact. It does not by itself prove that every roll earning it receives an overall Rare label; the whole roll uses total EP. See badge basics for a path to verified examples.

Every exact integer in the 0–1,000,000 range may be individually specific, but badge probabilities ask about a pattern shared by many integers. That is why “my exact number is unique” and “my badge is common” can coexist. Count a suffix pattern yourself. Do not treat an independently made rarity score on another site as original RNGdle EP; see daily vs unlimited.

Sources checked September 24, 2026: official About, official Quarter-Century badge. The full internal EP calculation has not been independently verified here.